Zipper's
Zipper’s BT EVO® Cam Clearance Tool
$0.00
Use this tool to provide clearance for high lift cam lobes in ‘70-’99 single-cam Big Twin engines. This tool will quickly machine precision cuts on the pinion bearing boss of the case. Can be used on the engine case in the frame with a 1/2” drill or in a milling machine with a disassembled engine.
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Zipper’s® Deck Height Tool
$0.00
Installed over the center of the piston, this tool will help you accurately determine such measurements as piston deck height and squish. Complete with dial indicators for EV/TC or M8.
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Zipper’s Sportster® Cam Clearance Tool
$0.00
Use this tool to provide clearance for high lift cam lobes in ‘91-up XL/XB Sportster®/Buell® engines. This tool will quickly machine precision cuts on the pinion bearing boss and the tappet bore housing undersides of the case. Can be used on the engine case in the frame with a 1/2” drill or in a milling machine with a disassembled engine.
Does not fit 2008-2010 XB's and 2008-2012 XR1200's.
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Zippers MaxFlow Intake for the Indian Scout, Bobber, Scout 60 and Victory Octane
$209.95
The factory-equipped airbox flows an impressive 331 CFM – but it is designed to reduce intake noise, which creates a long, twisting road from the air filter to the throttle body.
Zipper’s MaxFlow air filter system is a competition use only system designed for 555 CFM exclusively for max performance, and does not yield any noticeable intake noise while out-flowing the factory intake by 40%!
Where the stock design is full of sharp turns and narrow passages, our wide mouth velocity stack design with conical filter promotes smooth, turbulence-free flow directly to the throttle body.
This instantly available clean column of air results in rapid acceleration with improved torque, horsepower and throttle response.
This intake system requires tuning to correct for the lean-unstable AFR's the system creates. When paired with a Zippers 4" muffler and tuning it can transform the power band and the riding experience of the Scout, gaining as much as 17+ ft-lbs. of torque and 15+ hp allows for a possible E.T. of 11.5 seconds at the track a with a stock engine!
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Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.
Zipper’s Cushion-Drive Chain Conversion Kits for 2015-up Indian Scout Models
$0.00
Indian Scout Chain Conversion Kits Now Available! Whether you’re interested in a different final drive ratio or added driveline strength this kits will make your life easier. This bolt-on kit includes a specially CNC-machined billet hub adapter that retains the factory cush drive and allows the use of bolt-on aluminum rear sprockets. The fully assembled adapter contains (3) ball bearings and spacers required for proper wheel alignment, along with extra-strong 180,000 PSI tensile (20% stronger than grade 8) polished stainless steel sprocket bolts. Front and rear sprockets are included, steel front in 22T, aluminum rear sprocket your choice of teeth in 46-57 tooth spread. Chain is not included in kit price; choose chain finish and style from the options list.
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Zipper’s Twin Cam® Cam Clearance Tool
$0.00
Use this tool to provide clearance for high lift cam lobes in ‘99-’06 Twin Cam® engines. This tool will quickly machine precision cuts on the pinion bearing boss and the tappet bore housing undersides of the case. Single-spindle tool machines front or rear cam clearance separately; to reduce set-up time choose the dual spindle model. Can be used on the engine case in the frame with a 1/2” drill or in a milling machine with a disassembled engine.
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Zipper’s Muscle 124″ Kit for 2007-2017 CVO Twin Cam® engines
$0.00
Raise the bar to the top level on your CVO Twin Cam®! Zipper’s CVO Muscle 124 engine kit improves the high-breathing CVO head with Zipper’s CNC porting and oversize valves, while our proprietary +7cc domed pistons raise compression to 10.75:1. A new 4-5/8” crankshaft adds a ¼” more stroke, while new stress-relieved cylinders add an 1/8” more to the bore. Our Red Shift 657 cams are perfectly matched with the heads and piston to provide big torque & HP across the entire RPM range. Red Shift Dual-Piston cam tensioners are included with Pro-Taper pushrods and EZ-Adjust covers for a stable valve train, with all the gaskets needed for assembly. Case boring required for 4-1/8” cylinders; Timken® bearing conversion and cam chest/oil system upgrade highly recommended to improve durability and reliability. Make your CVO run even faster than it looks!
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Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.
*To ensure you enjoy a premium experience, Please fill out a Build Sheet/Job Order Sheet prior to completing an order on the website. Click here for Zipper's Build Sheet/Job Order Sheet
Zipper’s 124/128 M8 SLEEPER BIG BORE KITS
$0.00
124/128 M8 SLEEPER BIG BORE KITS
No replacement for displacement, right?
Our Sleeper kits easily turn your 107 M8 into a 124, or your 114/117 M8 into a 128 inch powerhouse! Kit includes new 4.25” bore cylinders fitted with Zippers-designed forged pistons, Red Shift 468 or 472 cam, Red Shift Dual-Piston tensioner with offset drive gears, quikee pushrods and chrome or black covers, new cam bearing and gaskets. Incredible power gains with stock heads, even more if you add our Stage II blueprint headwork!
To ensure you enjoy a premium experience, Please fill out a Build Sheet/Job Order Sheet prior to completing an order on the website.
Click here for Zipper's Build Sheet/Job Order Sheet
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Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.
Zipper's is here to help, if you have a question(s) please scroll down and fill out the form and hit send. We will review your question(s) and we will be in contact.
Zipper’s Sport Touring Kit for 2017 and later Milwaukee-Eight® Models
$0.00
The Sport-Touring Kit is a great choice between our popular Sleeper and Muscle kits!
Developed for the experienced rider that wants touring reliability and the widest power curve in its class! The Sport-Touring kit matches our Stage II M8 headwork blueprinting with our Red Shift 548 camshaft and 4.25” cylinder kit that results in big power across the entire RPM range. Twist the throttle at nearly any RPM and you’re rewarded with immediate, seemingly effortless forward motion! The key to this great power is the carefully engineered combination of airflow, camshaft timing, compression, displacement and Zipper’s legendary commitment to testing and machining detail. All of these components are produced in-house at Zipper’s so you can be assured of the highest quality and reliable results!
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Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.
*To ensure you enjoy a premium experience, Please fill out a Build Sheet/Job Order Sheet prior to completing an order on the website. Click here for Zipper's Build Sheet/Job Order Sheet
Zipper’s Blueprinted Cam Plate
$0.00
When the time comes to rebuild or to improve the power/durability of the venerable Twin Cam engine replacing the O.E. cast aluminum cam plate should be on your menu.
The cam support plate in a Twin Cam® engine is the manifold system used to distribute all oil flow to critical areas of the engine via oil pressure bypass valve and pressure chamber.
Many older O.E. plates may have internal leaks due to porosity in the pressure chamber. When this is present the results are less oil volume and reduced pressure needed to provide enough oil volume/film on high pressure engine parts trying to weld themselves together.
Each cam plate is finished with a final process of blueprinting the pressure chamber to assure its fully machined and tested for proper sealing, blow off and reset pressures the maximum oil flow possible to all critical engine parts.
Features:
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- Free of Porosity with Added Structural Integrity
- For added durability each plate comes with viscous bushings
- Each Plate has a Hand Sealed Pressure Chamber and Blue Printed Bypass Valve Function
- Provides More Stable Oil Pressure at all RPM’s, and all Temperature Ranges
- Prevents Advanced Degradation on Critical, High Pressure Engine Components
- Compatible with Zipper’s Dual Piston Cam Chain Tensioners or Gear Drive
- Both part #’s utilizes larger (2007-Up) Style Oil Pump
- Fitments For ’99-’06 Engines and 2007+Engines
- Available as a replacement part or can be ordered as a Complete Cam Chest Upgrade Kit
Zipper’s Muscle 124 & 128″ Kits for the M8
$4,209.00
Zipper's Muscle 124 & 128" Kits for the M8 produce great power across a wide RPM range!
Our 4.250" bore drop-on cylinders are fitted with Zipper's-designed forged pistons and topped off with Zipper's Stage III head work featuring CNC porting, +1mm stainless valves and hi-lift springs. Our Red Shift 552 cam delivers HUGE torque as soon as you open the throttle, and carries it across the RPM range to provide instant acceleration from any RPM. Compression is set to a relatively modest 11:1. It has an amazing sound at idle and under load, with torque and horsepower at the 150’s level. Peak torque starts at 2,800 rpm – 50 pounds more than stock, staying at nearly 150 ft/lbs for over 2,000 RPM, right where you ride! Tire life not guaranteed!
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Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.
Zipper's is here to help, if you have a question(s) please scroll down and fill out the form and hit send. We will review your question(s) and we will be in contact.
Zipper’s Muscle 124/128 Stage 4 kit for M8 engines
$0.00This is it, horsepower junkies - The Big Gun!
Zipper's engineering team developed the Muscle 124 and 128 Stage 4 kits for riders who want to win, every time. Careful testing of the latest technologies and components yields incredible power from the M8 platform on pump gas. Cylinder heads receive Zipper's CNC porting to Stage IV specs for maximum flow using +2mm oversize stainless valves, and Zipper’s 4.250” bore cylinders are fitted with 12:1 thermal and friction coated pistons. Our Red Shift 588 cam optimizes the output of these powerful components; careful selection of intake, exhaust and tuning delivers impressive results to 6500 RPM. This is not a bolt-on kit. It requires strengthening of the engine base and drive line upgrades - not unexpected when you are almost doubling the factory output - and should be executed by an experienced professional. “Walk softly, but carry a Big Gun!”
Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.
*To ensure you enjoy a premium experience, Please fill out a Build Sheet/Job Order Sheet prior to completing an order on the website. Click here for Zipper's Build Sheet/Job Order Sheet
Zipper’s Blueprinted Cam Chest Upgrade Kits
$0.00
When Adding New Cams or when it’s time to update an old engine Zipper’s has developed the highest quality total solution with our complete Cam Chest Upgrade Kit to help assure you can select the right cam profile, update the engine for added durability with the finest materials and increase the oil flow throughout the entire engine.
Includes blueprinted billet cam plate, Zipper’s patented dual-piston hydraulic cam chain tensioners, USA-made Tappet/Lifters, 2007-up style oil pump with increased feed and scavenge capacity, a set of USA-made Torrington/full-compliment inner cam bearings, and a cam chest gasket set. These top-shelf components will increase performance and durability to any Twin Cam Engine.
Features:
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- All components in one part # to complete the upgrade
- Includes professional analysis of ideal camshaft recommendation
- Available for all 1999-2006 Engines
- 2007-2017 Twin Cam® Engines
- In whole or in part; please contact us with any special requests
Zipper’s Muscle 95” Kit for ’99-’06 Twin Cam® 88” engines
$0.00
Zipper’s Original Muscle 95” Kit for ’99-’06 Twin Cam® 88” engines has been providing great service for over 25 years! The Muscle 95 gets its displacement boost by increasing the cylinder bore size to 3.875” when paired with the factory stock 4” stroke crankshaft. Your cylinder tops are decked for trueness and new 10.5:1 forged pistons are precision-fit using the latest Sunnen equipment, while your heads receive Zipper’s high-breathing Stage III treatment with CNC porting, new guides, oversize valves, performance springs and manual compression releases. Zipper’s Red Shift 577 cams provide big torque & HP gains across the entire RPM range. Also included are Pro-Taper pushrods and EZ-Adjust covers, with all gaskets needed for assembly. Highly recommended option: Zipper’s #417-495 blueprinted cam chest upgrade with our patented Red Shift Dual Piston hydraulic cam chain tensioners, blueprinted billet plate, HV oil pump, cam bearings and quality USA lifters for improved reliability and durability.
Zipper’s Muscle 95” kit produces excellent, reliable Horsepower and Torque gains - year after year, mile after mile!
This kit uses your factory head & cylinder cores sent in for modification. An exchange may be possible once your cores are cleaned, inspected and qualified for exchange.
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Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.
*To ensure you enjoy a premium experience, Please fill out a Build Sheet/Job Order Sheet prior to completing an order on the website. Click here for Zipper's Build Sheet/Job Order Sheet
Super-Magnet Drain Plugs
$0.00
FACT - Metal parts in your engine start wearing out the moment you hit the starter button. As they wear, metal particles circulate in your oil; left un-trapped, these same metal particles get run through high-pressure engine components, creating further wear. Your oil filter’s job is to contain the majority of these particles, but some can still circulate when the particles are microscopic or the filter bypass valve opens. These simple super-magnets can effectively minimize the damage caused by metal particles by trapping the debris caused by normal wear or un-normal component failure.
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Zipper’s ’99-’06 Twin Cam® Blueprinted Big Bore Cylinder Kits
$0.00
KITS FOR 1999-2006 TWIN CAM® ENGINES
Factory 1999-2006 Twin Cam® engines are equipped with 4” stroke crankshafts. The factory cylinder bore size of 3-3/4” yields the 88” displacement. We can turn your 88” engine into either a 95 or a 98”, simply by resizing the factory cylinders.
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Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.
*To ensure you enjoy a premium experience with a Zipper's Kit, Please fill out a Job Order Sheet prior to completing an order on the website. Click here for Zipper's Job Order SheetPlease choose your application below then select the radio button next to the item to purchase, then add to cart
Zipper’s ’07-Up Twin Cam® Blueprinted Big Bore Cylinder Kits
$0.00
KITS FOR 2007-UP TWIN CAM® ENGINES
Factory 2007-up Twin Cam® engines are equipped with 4-3/8” stroke crankshafts. The factory cylinder bore size of 3-3/4” yields the 96” displacement, which was gradually increased to 3-7/8” starting in 2010 for 103” displacement. We can turn your 96” engine into either a 103 or a 107”, and your 103 into a 107” simply by resizing the factory cylinders.
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Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.
***To ensure you enjoy a premium experience with a Zipper's Cylinder Kit, Please fill out a Job Order Sheet prior to completing an order on the website. Click here for Zipper's Job Order SheetPlease choose your application below then select the radio button next to the item to purchase, then add to cart
Zipper’s Milwaukee-Eight® Big Bore Cylinder Kits
$0.00
Increasing the size of a Milwaukee-Eight® engine is easy with Zipper’s Big Bore Cylinder Kits.
The Milwaukee-Eight® engines design is made for displacement increases and Zippers offers cylinder kits for Factory stock 4-valve head, SE heads and many Custom High Flow Heads to provide huge torque and horsepower gains.
Each of this specific bore sizes are designed to fit on the factory engine base without case boring just like like-stock installation.
4.250- 4.280 Bores
Zipper’s offers new alloy castings with bore sizes from 4.250 to 4.280
These castings are designed with additional aluminum for added strength vs a O.E. casting with a larger bore liner with the following features:
• Cast Aluminum has 1 lb. additional material for Strength and Reliability
• Stress Relieved Iron Liners
• Precision Sized on Sunnen SV-30 by Zipper’s skilled craftsman
• Special Ring Packs for Advanced Cylinder Sealing
• Gasket Surface Finish Improved for Superior Seal using Cometic MLS Gaskets
• Zipper’s Forged “Spec Built” Pistons manufactured by CP
We have many dome configurations to choose from so you can target various compression ratios. Contact Zipper's support if you have a special requirement.
4.250 x 4.375 stroke = 124ci
4.250 x 4.500 stroke = 128ci
Kits include precision fitted cylinders with tight tolerances, 2618 forged pistons with advanced ring packs, pins & clips, head and base gaskets and new head bolts. The rings custom sized to each cylinder.
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Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.
***To ensure you enjoy a premium experience with a Zipper's Cylinder Kit, Please fill out a Job Order Sheet prior to completing an order on the website. Click here for Zipper's Job Order SheetPlease choose your application below then select the radio button next to the item to purchase, then add to cart
Zipper’s 124” Stroker Big Bore Kit for 1999-Up Twin Cam® Engines
$0.00
These cylinders, when used with our 4-5/8” stroker crankshaft, increase displacement to 124”. Complete kits include cylinders, forged flat top piston kit, head and base gaskets. Requires case boring (instructions included) and stroker piston cooling jet kit. These cylinders are .183” longer than stock and require a wider intake manifold. Fits in all frames.
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Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.
***To ensure you enjoy a premium experience with a Zipper's Cylinder Kit, Please fill out a Job Order Sheet prior to completing an order on the website. Click here for Zipper's Job Order Sheet
Zipper’s 117” Stock Stroke-Big Bore Kit For 2007-Up Engines
$0.00
These cylinders are designed to be used with a stock 96” (4-3/8” stroke) crankshaft to increase displacement from 96” to 117”. Can also be used in 1999-2006 engines as long as the crankshaft is changed to 4-3/8” stroke. Complete kits include cylinders, forged flat top piston kit, head and base gaskets. Requires case boring (instructions included) and stroker piston cooling jet kit. These cylinders are .045” longer than stock and require a slightly longer intake manifold or throttle body.
In compliance with ARB emissions laws, this product is not sold or shipped to California.
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Zipper’s STAGE 3 – ThunderSport CNC Headwork for Milwaukee-Eight® Engines
$0.00
The 4-valve M8 cylinder head flows considerably more air than previous 2-valve heads – but it needs to, to support today's larger engines. Flow testing the stock heads shows an imbalance between intake and exhaust flow ratios. Our combination of qualifying seat installation, CNC porting, professional seat and guide finishing with oversize valves, careful spring set up and decking ensures you will extract maximum power from your engine modifications while improving the flow imbalance. This work is performed on your supplied head cores.
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Not legal for sale or use in California on any pollution controlled motor vehicle. Not legal for sale or use on any EPA pollution controlled motor vehicle.
*To ensure you enjoy a premium experience, Please fill out a Build Sheet/Job Order Sheet prior to completing an order on the website. Click here for Zipper's Build Sheet/Job Order Sheet
Zipper’s Pro-Taper Twin Cam®/XL® Pushrods
$0.00
There’s Power in These Pushrods! Admittedly, the weakest link in a Harley® performance engine is the valve train stiffness, or rather the lack of it. These high performance adjustable pushrods add much needed stiffness to the valve train.
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#403-145 Set/4 Zipper’s TC 3/8″ diameter, .145″ wall chrome moly pushrods
$148.50
Strongest 3/8” straight-wall adjustable chrome moly pushrods we have! Unlike other 3/8” diameter pushrods, the pushrod and threaded adjuster section are machined from one piece of 145” thick-wall chrome moly. By not using an insert for the adjuster, the threaded portion remains a beefy 3/8” diameter, eliminating the chronic weak spot associated with ¼” diameter inserts. The large diameter adjustable base and locknut provide ultimate stiffness; combined with the 3/8” diameter rod, pushrod tube rubbing is eliminated. We recommend these pushrods for use in Twin Cam® engines with stock beehive valve springs and bolt-in cams for precise valve train control.
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Zipper’s Custom Length Pro-Taper Pushrods for XL, Twin Cam and EVO Engines
$0.00
Our Pro-Taper pushrods are also available for the professional engine builder who wants the stiffest adjustable pushrods available. The weakest link in an adjustable pushrod is the adjuster itself; keeping the pushrod adjuster as short possible helps maintain the highest resistance to deflection. For this reason we offer the Pro-Taper pushrods, sold each, in the fully collapsed lengths listed below so you can order exactly the lengths you need to keep the adjuster extension at a minimum, for maximum rigidity. Pushrods are chrome moly, .095” wall, 7/16” diameter at the bottom tapering to 3/8” at the top with a full radius rocker ball tip. Adjuster thread is 5/16” x 1.250” length, 32 TPI.
Note - Pushrods are sold each. Depending on your tappets and pushrod tube length the length of the lower adjuster may not be ideal for ease of adjustment.
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Zipper’s Cut-To-Fit Pushrods (sold each)
$0.00
Need custom length pushrods? These solid pushrods are made from heat treated .065” wall seamless 3/8” chrome moly tubing and are supplied with full radius “Mae West” tips (drilled for oil flow) for use with the highest lift cams. They are supplied extra-long with one end unfinished, to be custom fitted by the engine builder. Cut, drill end .250”, ream 17/64”, press in tip. Use with adjustable lifters or customize length for hydraulic lifter pre-load. Sold each.
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Zipper’s Cushion-Drive Chain Conversion Kits for 2009 and later Touring Models
$0.00
We’ve taken the hassle of converting your late model belt driven H-D® to chain drive. Whether you’re interested in a different final drive ratio or added driveline strength this kits will make your life easier.
Zipper's NEW cushion-drive chain conversion kit for 2009-up Touring models is for high output engines, with a modular design for strength and easy ratio changes. This kit is supplied with a steel front sprocket, a 7075-T6 aerospace aluminum rear sprocket or black steel rear sprocket, and O-ring chain (available in standard metallic, gold, or black) or Drag Race chain. Our cushion-drive chain conversion kit is equipped with a chrome-moly axle and severe-duty slider-style chain adjusters, eliminating the cam adjusters. Conveniently, this system bolts-on and does not require modifications to the swing-arm. Contact us today for any additional inquires about this kit.
https://youtu.be/r7M1TEXEDAU
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Zipper’s Chain Conversion Kits for Touring Models
$0.00
We’ve taken the hassle of converting your late model belt driven H-D® to chain drive. Whether you’re interested in a different final drive ratio, added driveline strength or more clearance for a wider tire, these kits will make your life easier. Kits are available with durable, high wearing RK Pro O-Ring chains (best for street use) or RK's brutally strong, non-o-ring DR (Drag Race) chain.
*** Due to supply problems, 1985 - 1999 and 2007 and 2008 kits are only available with chrome steel or silver steel rear sprockets!!! The largest rear sprocket available is a 51 tooth***. 2000-2006 kits are only available with chrome steel or black steel rear sprockets.
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Zipper’s Chain Conversion Kits for Dyna® Models
$0.00
We’ve taken the hassle of converting your late model belt driven H-D® to chain drive. Whether you’re interested in a different final drive ratio, added driveline strength or more clearance for a wider tire, these kits will make your life easier. Kits are available with durable, high wearing RK Pro O-Ring chains (best for street use) or RK's brutally strong, non-o-ring DR (Drag Race) chain.
*** Due to supply problems, 1985 - 1999 and 2006 and later kits are only available with chrome steel or silver steel rear sprockets!!! The largest rear sprocket available is a 51 tooth***. 2000-2005 kits are only available with chrome steel or black steel rear sprockets.
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*To purchase item(s) below select the radio button next to item of your choice, then click add to cart*.
Zipper’s Chain Conversion Kits for Softail® Models
$0.00
We’ve taken the hassle of converting your late model belt driven H-D® to chain drive. Whether you’re interested in a different final drive ratio, added driveline strength or more clearance for a wider tire, these kits will make your life easier. Kits are available with durable, high wearing RK Pro O-Ring chains (best for street use) or RK's brutally strong, non-o-ring DR (Drag Race) chain.
*** Due to supply problems, kits are only available with chrome steel or silver steel rear sprockets in 46, 47, 48, 49 and 51 tooth!!! ***
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Please choose your application then select the radio button next to the item to purchase, then add to cart
Zipper’s Chain Conversion Kits for Sportster® Models
$0.00
We’ve taken the hassle of converting your late model belt driven H-D® to chain drive. Whether you’re interested in a different final drive ratio, added driveline strength or more clearance for a wider tire, these kits will make your life easier. Kits are available with durable, high wearing RK Pro O-Ring chains (best for street use) or RK's brutally strong, non-o-ring DR (Drag Race) chain.
*** Due to supply problems, 1991-1999 kits are only available with chrome steel or silver steel rear sprockets!!! 2000-2003 kits are only available with black steel rear sprockets. 2004 and alter kits are only available with chrome steel or silver steel rear sprockets**
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Please choose your application then select the radio button next to the item to purchase, then add to cart
Zipper’s Chain Conversion Kits for FXR® Models
$0.00
We’ve taken the hassle of converting your late model belt driven H-D® to chain drive. Whether you’re interested in a different final drive ratio, added driveline strength or more clearance for a wider tire, these kits will make your life easier. Kits are available with durable, high wearing RK Pro O-Ring chains (best for street use) or RK's brutally strong, non-o-ring DR (Drag Race) chain.
*** Due to supply problems, kits are only available with chrome steel or silver steel rear sprockets in 46, 47, 48, 49 and 51 tooth!!! ***
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Zipper’s Axle & Adjuster Kit for 2009-Up Touring Models
$359.95
Axle & Adjuster Kit for 2009-Up Touring Models - Zipper's NEW axle and adjuster kit for 2009-up Touring models allows precise adjustment and alignment of the rear wheel, replacing the factory cam-type adjusters. This kit is supplied with a chrome-moly axle and severe-duty slider-style chain adjusters, eliminating the hard-to-align cam adjusters. Conveniently, this system bolts-on and does not require modifications to the swing-arm. Contact us today for any additional inquires about this kit.
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Zipper’s 5 Speed Big Twin Support Door (Bisagno Style)
$0.00
Zipper’s manufactures the strongest transmission door for Big Twin 5 speed transmissions. This double row ball bearing design provides more shaft support than any other product on the market!
This door is the ideal choice for any high performance or hard core racing application.
These doors will give you:
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- Improved shifting
- Less frictional losses
- Added Support for durability in large power output applications
Dual Coil Mounting Kits from Zipper’s Performance
$0.00
Zipper's has designed a dual coil mounting kit that is simple, functional and looks great. Developed to use H-D® style coils, these bracket kits include a top motor mount, special coil bracket, chrome steel coil covers and stainless steel mounting hardware. This system mounts the coils between the cylinders on the left side with the coil wire outlets facing in. Horn relocation may be required on some models. Coils not included.
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Zipper’s Thunderbolt Ignition Module
$0.00
The Zipper’s Ignition System for the carburetor-equipped Twin Cam® and 2004-2006 XL engines offers the user many options for setting up the ignition system for optimum performance. Externally, the module is adjustable through 5 switches (face-mounted for easy access). These switches can be used to control operating modes including multi-spark, rev limit (in 100 RPM increments), initial timing setting and a selection of ignition advance slopes.
Please make selection from the options below, then click add to cart
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Zipper’s Thunderbolt Nosecone Ignition Module by Twin Tec
$0.00
The Thunderbolt nosecone internal ignition is designed to fit all Evolution® '86-'99 Big Twin and '86-'03 Sportster® models, as well as ‘70-'84 Shovelhead and ‘71-'85 Iron XL’s. It is fully contained within the cam cover, replacing the externally mounted module on all models originally equipped with electronic ignitions.
*Required to select the radio button next to item of your choice from the options listed below, then click add to cart*
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